RE: nrf9160 dk not responding to at commands from external mcu over uart

Kazi Afroza Sultana — Thu, 08 Dec 2022 11:02:39 GMT

That's great to hear.

RE: nrf9160 dk not responding to at commands from external mcu over uart

Jacqueline Koch — Wed, 07 Dec 2022 08:23:05 GMT

In my code on the STM I forgot CR and LF. Now the UART connection between them is working. I don't know why it does not work with Putty but since that is not important for my work I will close the ticket now.

RE: nrf9160 dk not responding to at commands from external mcu over uart

Jacqueline Koch — Tue, 06 Dec 2022 14:20:25 GMT

I have tried different combinations of CR and LF. The only reaction I sometimes get is this warning <wrn> slm_at_host: RX_STOPPED (4) but I cannot find a pattern that triggers it. In this screenshot it appeared after the last command I send.

RE: nrf9160 dk not responding to at commands from external mcu over uart

Kazi Afroza Sultana — Tue, 06 Dec 2022 11:09:41 GMT

Yes. There was a space after CONFIG_SLM_LOG_LEVEL_DBG this. What line endings you have used?

RE: nrf9160 dk not responding to at commands from external mcu over uart

Jacqueline Koch — Tue, 06 Dec 2022 11:06:01 GMT

I just realized my mistake was that I forgot to remove the spaces in CONFIG_SLM_LOG_LEVEL_DBG = y. That's why it did not compile. Now the RTT output is this:

RE: nrf9160 dk not responding to at commands from external mcu over uart

Jacqueline Koch — Mon, 05 Dec 2022 14:01:50 GMT

Hello,

sorry for the late reply.

Here is the proj.conf:

#
# Copyright (c) 2020 Nordic Semiconductor ASA
#
# SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
#
# General config
CONFIG_LOG=y
CONFIG_LOG_DEFAULT_LEVEL=3
CONFIG_STACK_SENTINEL=y
CONFIG_NEWLIB_LIBC=y
CONFIG_NEWLIB_LIBC_FLOAT_PRINTF=y
CONFIG_RING_BUFFER=y

# Segger RTT
CONFIG_USE_SEGGER_RTT=y
CONFIG_RTT_CONSOLE=y
CONFIG_UART_CONSOLE=n
CONFIG_LOG_BACKEND_RTT=y
CONFIG_LOG_BACKEND_UART=n

# Network
CONFIG_NETWORKING=y
CONFIG_NET_SOCKETS=y
CONFIG_NET_NATIVE=n

# Modem library
CONFIG_NRF_MODEM_LIB=y
# Align the max FD entry to NRF_MODEM_MAX_SOCKET_COUNT(8)
CONFIG_POSIX_MAX_FDS=8
# Enable below for modem trace
#CONFIG_NRF_MODEM_LIB_TRACE=y
# Handle modem fault
CONFIG_NRF_MODEM_LIB_ON_FAULT_APPLICATION_SPECIFIC=y

# Use GPIO
CONFIG_GPIO=y
CONFIG_GPIO_NRFX=y

# UART interface
CONFIG_SERIAL=y
CONFIG_UART_ASYNC_API=y
CONFIG_NRFX_TIMER2=y

# Stacks and heaps
CONFIG_MAIN_STACK_SIZE=4096
CONFIG_HEAP_MEM_POOL_SIZE=16384
CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE=4096
CONFIG_AT_MONITOR_HEAP_SIZE=4096

# Device power management
CONFIG_PM_DEVICE=y

# FOTA
CONFIG_HTTP_PARSER_URL=y
CONFIG_FOTA_DOWNLOAD=y
CONFIG_FOTA_DOWNLOAD_PROGRESS_EVT=y
CONFIG_DFU_TARGET=y
CONFIG_DOWNLOAD_CLIENT=y
CONFIG_DOWNLOAD_CLIENT_STACK_SIZE=4096
CONFIG_BOOTLOADER_MCUBOOT=y
CONFIG_IMG_MANAGER=y

# FLASH
CONFIG_FLASH=y
CONFIG_FLASH_PAGE_LAYOUT=y
CONFIG_FLASH_MAP=y
CONFIG_MPU_ALLOW_FLASH_WRITE=y
CONFIG_IMG_ERASE_PROGRESSIVELY=y

# Settings
CONFIG_SETTINGS=y
CONFIG_SETTINGS_FCB=y
CONFIG_FCB=y

# nRF Cloud
#CONFIG_NRF_CLOUD_IPV6=y
CONFIG_NRF_CLOUD_MQTT=y
CONFIG_NRF_CLOUD_FOTA=n
CONFIG_NRF_CLOUD_AGPS=y
CONFIG_NRF_CLOUD_AGPS_FILTERED=n
CONFIG_NRF_CLOUD_PGPS=y
CONFIG_NRF_CLOUD_LOCATION=y
CONFIG_NRF_CLOUD_LOG_LEVEL_INF=y
CONFIG_NRF_CLOUD_GPS_LOG_LEVEL_INF=y
CONFIG_DATE_TIME=y
CONFIG_MODEM_INFO=y
CONFIG_MODEM_INFO_ADD_DATE_TIME=n
CONFIG_AT_MONITOR=y
CONFIG_MODEM_JWT=y
CONFIG_NRF_CLOUD_CLIENT_ID_SRC_INTERNAL_UUID=y

#
# SLM-specific configurations
#
CONFIG_SLM_CUSTOMIZED=n
CONFIG_SLM_LOG_LEVEL_INF=y
#CONFIG_SLM_LOG_LEVEL_DBG = y
CONFIG_SLM_EXTERNAL_XTAL=n
CONFIG_SLM_START_SLEEP=n
CONFIG_SLM_DATAMODE_URC=n

# nRF Cloud based location services
CONFIG_SLM_AGPS=n
CONFIG_SLM_PGPS=n
CONFIG_SLM_CELL_POS=n

# Serial DFU support
CONFIG_SLM_NRF52_DFU=n
CONFIG_SLM_NRF52_DFU_LEGACY=n

the nrf9160dk_nrf9160_ns.conf:

#
# Copyright (c) 2021 Nordic Semiconductor ASA
#
# SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
#

# Configuration file for nRF9160DK.
# This file is merged with prj.conf in the application folder, and options
# set here will take precedence if they are present in both files.

# Use UART_0 (when working with PC terminal)
# unmask the following config
#CONFIG_SLM_CONNECT_UART_0=y
#CONFIG_UART_0_NRF_HW_ASYNC_TIMER=2
#CONFIG_UART_0_NRF_HW_ASYNC=y
#CONFIG_SLM_WAKEUP_PIN=6
#CONFIG_SLM_INDICATE_PIN=2

# Use UART_2 (when working with external MCU)
# unmask the following config
CONFIG_SLM_CONNECT_UART_2=y
CONFIG_UART_2_NRF_HW_ASYNC_TIMER=2
CONFIG_UART_2_NRF_HW_ASYNC=y
CONFIG_SLM_WAKEUP_PIN=31
CONFIG_SLM_INDICATE_PIN=30

and the nrf9160dk_nrf9160_ns.overlay:

/*
 * Copyright (c) 2021 Nordic Semiconductor ASA
 *
 * SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
 */

&uart0 {
	status = "disabled";
};

&uart2 {
	compatible = "nordic,nrf-uarte";
	current-speed = <115200>;
	status = "okay";
	//hw-flow-control;

	pinctrl-0 = <&uart2_default_alt>;
	pinctrl-1 = <&uart2_sleep_alt>;
	pinctrl-names = "default", "sleep";
};

&i2c2 {
	status = "disabled";
};

&pinctrl {
	uart2_default_alt: uart2_default_alt {
		group1 {
			psels = <NRF_PSEL(UART_TX, 0, 10)>,
				<NRF_PSEL(UART_RX, 0, 11)>;
				//<NRF_PSEL(UART_RTS, 0, 12)>,
				//<NRF_PSEL(UART_CTS, 0, 13)>;
		};
	};

	uart2_sleep_alt: uart2_sleep_alt {
		group1 {
			psels = <NRF_PSEL(UART_TX, 0, 10)>,
				<NRF_PSEL(UART_RX, 0, 11)>;
				//<NRF_PSEL(UART_RTS, 0, 12)>,
				//<NRF_PSEL(UART_CTS, 0, 13)>;
			low-power-enable;
		};
	};
};

I have upgraded to the nrf Connect SDK v2.2.0.-rc1 and created a new build configuration with debug configurations turned off because that enabled me to start a debugging session like in this thread.

This was the RTT output:

I tried to insert CONFIG_SLM_LOG_LEVEL_DBG = y in the proj.conf file, however, if I do the project fails to compile.

Building serial_lte_modem
west build --build-dir c:\Nordic\examplePojects\serial_lte_modem\build c:\Nordic\examplePojects\serial_lte_modem

[0/1] Re-running CMake...
Loading Zephyr default modules (Zephyr base (cached)).
-- Application: C:/Nordic/examplePojects/serial_lte_modem
-- Found Python3: C:/ncs/toolchains/v2.2.0-rc1/opt/bin/python.exe (found suitable exact version "3.8.2") found components: Interpreter 
-- Cache files will be written to: C:/ncs/v2.2.0-rc1/zephyr/.cache
-- Zephyr version: 3.2.99 (C:/ncs/v2.2.0-rc1/zephyr)
-- Found west (found suitable version "0.14.0", minimum required is "0.7.1")
-- Board: nrf9160dk_nrf9160_ns, Revision: 0.7.0
-- Found host-tools: zephyr 0.15.1 (C:/ncs/toolchains/v2.2.0-rc1/opt/zephyr-sdk)
-- Found toolchain: zephyr 0.15.1 (C:/ncs/toolchains/v2.2.0-rc1/opt/zephyr-sdk)
-- Found BOARD.dts: C:/ncs/v2.2.0-rc1/zephyr/boards/arm/nrf9160dk_nrf9160/nrf9160dk_nrf9160_ns.dts
-- Found devicetree overlay: C:/Nordic/examplePojects/serial_lte_modem/boards/nrf9160dk_nrf9160_ns.overlay
-- Generated zephyr.dts: C:/Nordic/examplePojects/serial_lte_modem/build/zephyr/zephyr.dts
-- Generated devicetree_generated.h: C:/Nordic/examplePojects/serial_lte_modem/build/zephyr/include/generated/devicetree_generated.h
-- Including generated dts.cmake file: C:/Nordic/examplePojects/serial_lte_modem/build/zephyr/dts.cmake

warning: Experimental symbol HTTP_CLIENT is enabled.


C:/Nordic/examplePojects/serial_lte_modem/prj.conf:97: warning: attempt to assign the value ' y' to the undefined symbol SLM_LOG_LEVEL_DBG 
Parsing C:/Nordic/examplePojects/serial_lte_modem/Kconfig
Loaded configuration 'C:/ncs/v2.2.0-rc1/zephyr/boards/arm/nrf9160dk_nrf9160/nrf9160dk_nrf9160_ns_defconfig'
Merged configuration 'C:/Nordic/examplePojects/serial_lte_modem/prj.conf'
Merged configuration 'C:/Nordic/examplePojects/serial_lte_modem/boards/nrf9160dk_nrf9160_ns.conf'

error: Aborting due to Kconfig warnings

CMake Error at C:/ncs/v2.2.0-rc1/zephyr/cmake/modules/kconfig.cmake:328 (message):
  command failed with return code: 1
Call Stack (most recent call first):
  C:/ncs/v2.2.0-rc1/zephyr/cmake/modules/zephyr_default.cmake:108 (include)
  C:/ncs/v2.2.0-rc1/zephyr/share/zephyr-package/cmake/ZephyrConfig.cmake:66 (include)
  C:/ncs/v2.2.0-rc1/zephyr/share/zephyr-package/cmake/ZephyrConfig.cmake:97 (include_boilerplate)
  CMakeLists.txt:9 (find_package)


-- Configuring incomplete, errors occurred!
See also "C:/Nordic/examplePojects/serial_lte_modem/build/CMakeFiles/CMakeOutput.log".
See also "C:/Nordic/examplePojects/serial_lte_modem/build/CMakeFiles/CMakeError.log".
FAILED: build.ninja 
C:\ncs\toolchains\v2.2.0-rc1\opt\bin\cmake.exe --regenerate-during-build -SC:\Nordic\examplePojects\serial_lte_modem -BC:\Nordic\examplePojects\serial_lte_modem\build
ninja: error: rebuilding 'build.ninja': subcommand failed
FATAL ERROR: command exited with status 1: 'c:\ncs\toolchains\v2.2.0-rc1\opt\bin\cmake.EXE' --build 'c:\Nordic\examplePojects\serial_lte_modem\build'

 *  The terminal process terminated with exit code: 1. 
 *  Terminal will be reused by tasks, press any key to close it.

RE: nrf9160 dk not responding to at commands from external mcu over uart

Kazi Afroza Sultana — Mon, 28 Nov 2022 14:57:29 GMT

Hello,

Can you please send the configuration files? We also need to look at the RTT log to see if the modem receives any data. You need to set CONFIG_SLM_LOG_LEVEL_DBG = y to get the RTT log.

Thanks.

Best Regards,

Kazi Afroza Sultana